JPH0726260Y2 - Recovery device - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a recovery device for recovering a product in a production line for inspecting and manufacturing powdery or granular chemicals, foods, mechanical parts, electronic parts, etc. It is a thing.

[Conventional technology]

Conventional examples are shown in FIGS. 6 to 7. The first conventional example shown in FIG. 6 (a) uses a rotary solenoid (11) to connect a rotary shaft (11a) of the rotary solenoid (11) and a connecting shaft (8) with a joint (10). The recovery guide (3) is driven to rotate at an appropriate angle.

In the second conventional example shown in FIG. 7, the linear movement of the rack (16) which is moved by the action of the air cylinder (18) and restricted by the stopper (17) is rotated by the rotating pinion (1).
It is converted into rotational motion by 5) and the recovery guide (3) is rotationally driven.

[Problems to be solved by the invention]

In the first conventional example, when the recovery guide (3) stops at the closed position, an overshoot occurs, and the recovery guide (3) cannot be accurately stopped at a predetermined position.
There is a problem that the tip of the recovery guide (3) collides with the side wall (1a) of the turntable (1) shown in FIG. In particular, the collection of pharmaceuticals poses a problem of dust generation. As a countermeasure against this, there is a method of attaching a cushioning material (12) to the back surface of the recovery guide (3) as shown in FIG. 6 (b). The width of the material (12) that can be collected is narrowed by the thickness of the material (12), and when a small object to be collected comes into contact with the side wall (1a) of the turntable (1), the side wall (1a) of the turntable (1) and the collection guide (3). There is a problem that the object to be recovered enters the gap (13) from the end of () and cannot be recovered smoothly. Also, FIG. 6 (c)
In order to avoid a direct collision as shown in Fig. 6, a method is also possible in which a gap (14) is provided between the tip of the recovery guide (3) and the side wall (1a) of the turntable (1) in anticipation of the amount of overshoot. However, if the object to be recovered is small, there is a problem that the object to be recovered passes through the gap (14) and cannot be recovered.

The second conventional example shown in FIG. 7 does not have the problem as the first conventional example, but requires an air source and piping equipment (not shown) for driving the air cylinder (18), which complicates the configuration. There is a problem that it cannot be made compact and is restricted by the installation place. The present invention is intended to solve such a problem that the conventional device has.

[Means for solving problems]

This invention has the following configuration in order to achieve the above object. That is, a turntable that receives the object to be collected on the board surface and conveys it in the circumferential direction, a plurality of collection ports provided at appropriate intervals along the outer peripheral edge of the turntable, and in the vicinity of these collection ports. It consists of a collection guide provided,
In the recovery device configured to rotate the recovery guide around a fulcrum and guide the recovery target to the recovery port according to the rotation angle thereof, a drive motor for driving the recovery guide, A drive cam that is attached to the drive shaft of the drive motor and rotates, a driven arm that has a tip end contacting the outer periphery of the drive cam, and that rotates about a fulcrum according to the undulation of the outer peripheral contour, and the driven arm. A pressing mechanism that urges the arm in a direction to always contact the outer periphery of the drive cam, a connecting shaft that connects the fulcrum of the driven arm and the fulcrum of the recovery guide and transmits the rotation of the driven arm to the recovery guide, and a recovery guide. It is characterized in that it is provided with a guide opening / closing mechanism including guide stopping means for stopping at each of the opening and closing positions.

[Action]

According to the structure of the present invention, the drive cam fixed to the drive shaft of the drive motor rotates, so that the driven arm in contact with the outer periphery of the drive cam rotates about the fulcrum.
The recovery guide also rotates in the same manner via a connecting shaft that connects the fulcrum of the driven arm and the fulcrum of the recovery guide. Further, the recovery guide is stopped at a predetermined open / close position by the guide stop means that detects the rotation angle corresponding to each open / close position of the recovery guide and stops the drive motor. Therefore, especially when the recovery guide is stopped at the open position, overshoot does not occur, so that it does not collide with the side wall of the turntable and does not damage the wall surface of the turntable. Further, since it is not necessary to provide a buffer material on the recovery guide, no waste is generated and a small object to be recovered is not stagnant at the time of recovery. Furthermore, since there is no gap between the tip of the recovery guide and the side wall of the turntable, a small object to be recovered will not pass through.

The present invention will be described in detail with reference to the embodiments shown in the drawings.

〔Example〕

An embodiment of this invention is shown in FIGS. 1 (a), (b) and second.
It will be described with reference to the drawings. In FIG. 1, the recovery apparatus according to the embodiment has a turntable (1) that receives the object to be recovered on the board surface and conveys it in the circumferential direction, and an appropriate interval along the outer peripheral edge of the turntable (1). It is composed of a plurality of recovery ports (2) provided and a plurality of recovery guides (3) provided in the vicinity of these recovery ports (2), and the recovery guide (3) is centered on a fulcrum (31). A drive motor (4) for driving a recovery guide (3) in a recovery device that is configured to rotate to the direction described above and guide the object to be recovered to the recovery port (2) as necessary depending on the rotation angle. And a drive cam (5) which is attached to the drive shaft (4a) of the drive motor (4) and rotates, and a tip portion of the drive cam (5) contacts the outer periphery of the drive cam (5) so as to respond to the undulation of the outer peripheral contour. Fulcrum (6
A driven arm (6) which rotates around 1), a pressing mechanism (7) for urging the driven arm (6) in a direction in which the driven arm (6) is always in contact with the outer periphery of the driving cam (5), and the driven arm. The recovery guide (3) and the connecting shaft (8) that connects the fulcrum (61) of (6) and the fulcrum (31) of the recovery guide (3) to transmit the rotation of the driven arm (6) to the recovery guide (3). It is provided with a guide opening / closing mechanism (G) including a guide stopping means (9) for stopping at each of the opening and closing positions.

The guide opening / closing mechanism (G) includes recovery guides (3a), (3
b), (3a '), and (3b') are driven to open and close, respectively. As shown in FIG. 1 (a), the final stage recovery guides (3c) and (3c ') are excluded (see later). The recovery guide at the final stage is always open. All recovery guides (3) are provided.

The driving cam (5) is formed with an outer peripheral contour so that the recovery guide (3) can rotate within a predetermined range, and has four inflection points A, B, C, D on the outer periphery. Have, between arc AB and arc CD
The radius does not change between the arcs, but the radius is gradually reduced between the arcs BC, and the radius is gradually increased between the arcs DA. It is attached to the drive shaft (4a) of (4).

The tip of the drive arm (6) contacts the outer periphery of the drive cam (5), and a fulcrum (61) is generated as the drive cam (5) rotates.
It rotates about.

The pressing mechanism (7) has an appropriate pressing force so that the tip of the driven arm (6) that is in contact with the outer periphery of the driving cam (5) does not separate when the driving cam (5) rotates. Is given.

The connecting shaft (8) supports the fulcrum (6) of the driven arm (6).
1) is connected to the fulcrum (31) of the recovery guide (3) to transmit the rotation of the driven arm (6) to the recovery guide (3).

The guide stop means (9) stops the recovery guide (3) at a predetermined position of opening and closing when the recovery guide (3) rotates, and the drive corresponding to the stop position of the recovery guide (3). The drive motor (4) is stopped by the action of the guide stop sensors (9a) and (9b) that detect the rotation angle of the cam (5).

Next, the operation of the apparatus of this embodiment will be described. The recovery guide (3) is initially in a closed state (closed in the direction of arrow S in FIG. 1 (b)), and as shown in FIG. 3 (a), the tip of the driven arm (6) is It is in contact with the outer peripheral point B of the drive cam (5), and the outer peripheral point A is stopped in front of the guide stop sensor (9a) (while the sensor is operating). next,
The drive motor (4) receives an open signal (not shown), the drive cam (5) rotates in the direction of arrow P, and the outer peripheral points B to C of the drive cam (5) come into contact with the tip of the driven arm (6). When it moves to, the driven arm (6) rotates in the direction of the arrow Q and the recovery guide (3) also rotates toward the open position, and when the outer peripheral point A reaches before the guide stop sensor (9b), the same sensor. Operates and stops the drive motor (4). At this time, as shown in FIG. 3 (b), the tip of the driven arm (6) is in contact with the outer peripheral point D of the drive cam (5).

In FIG. 1 (a), when the turntable (1) is rotated in the direction of the arrow (solid line), the object to be recovered supplied on the board surface is recovered by the recovery guide ( It is guided to the recovery port (2a) along 3a) and recovered in a recovery container (not shown). After a predetermined number of objects to be recovered are accommodated in the recovery container, the drive motor (4) receives a full signal (not shown) and the drive cam (5) moves in the direction of arrow P as shown in FIG. 3 (b). When the outer peripheral point of the drive cam (5) that further rotates and comes into contact with the tip of the driven arm (6) moves from D to A, the driven arm (6) rotates in the direction of arrow R accordingly and the recovery guide ( 3) also rotates toward the closed position, and when the outer peripheral point A comes before the guide stop sensor (9a), the sensor operates to stop the drive motor (4). At this time, as shown in FIG. 3 (a), the tip end of the driven arm (6) is in contact with the outer peripheral point B of the driving cam (5) again.
Next, collect the recovery target (2b) along the recovery guide (3b).
It is guided to b) and collected in a collection container (not shown).

In this way, the objects to be recovered are sequentially recovered in the recovery containers corresponding to the recovery ports (2a) to (2c). Here, at the final recovery port (2c), the recovery guide (3c) is fixed to the normally open state without opening and closing. When the collection containers from the collection ports (2a) to (2c) are full, the turntable (1) is rotated in the opposite direction (the direction of the broken line arrow) as shown in FIG. 1 (a), and the same as above. Then, the recovery port (2a ') ~
Collect the recovered material in (2c ').

FIG. 4 is a time chart showing the operation of the guide opening / closing mechanism (G) until the recovery guide (3) rotates from the closed position to the open position and returns to the closed position, where tm is the drive motor (4).
Shows the rotation time of.

In this way, the drive cam (5) is rotated by the drive motor (4), the driven arm (6) is rotated according to the undulation of the outer peripheral contour of the drive cam (5), and the connecting shaft (8) is rotated.
Since the rotation of the driven arm (6) is transmitted to the recovery guide (3) via the, the recovery guide (3) can be smoothly rotated, there is no overshoot in the open position, and the recovery guide (3) ) Tip of the turntable (1) does not collide with the side wall (1a) of the turntable (1)
Side wall (1a) is not damaged. Also, a guide stop sensor [close confirmation switch] (9a) and a guide stop sensor [open confirmation switch] as guide stop means (9).
By the action of (9b), highly accurate positioning can be performed at each opening and closing position, and there is no gap between the tip of the recovery guide (3) and the side wall (1a) of the turntable (1).
Small objects do not pass through.

In this embodiment, one end of the driven arm (6) is brought into direct contact with the outer periphery of the driving cam (5), but as shown in FIG. 5, the rotary roller (62) is attached to the tip of the driven arm (6).
It is also possible to reduce the friction with the outer peripheral surface of the drive cam (5) by mounting the drive cam (5) to make the rotational movement of the driven arm (6) smoother.

[Effect of device]

According to this invention, when the drive cam fixed to the drive shaft of the drive motor rotates, the driven arm that is in contact with the outer periphery of the drive cam rotates about a fulcrum, and the driven shaft moves through the connecting shaft. Since the recovery guide is accurately stopped at a predetermined position by the guide stop means in the open and closed states of the recovery guide that rotates with respect to the recovery guide, overshoot does not occur when the recovery guide stops at the open position. The tip does not collide with the side wall of the turntable and does not damage the wall surface of the turntable. Further, since it is not necessary to provide a buffer material on the recovery guide, no waste is generated and a small object to be recovered is not stagnant during recovery. Further, since there is no gap between the tip of the recovery guide and the side wall of the turntable, a small object to be recovered will not pass through.

[Brief description of drawings]

1 (a) is an overall explanatory view of an embodiment of the present invention, FIG. 1 (b) is a detailed explanatory view of a guide opening / closing mechanism according to the embodiment, and FIG. 2 is a II-II of FIG. 1 (a). Enlarged sectional view by line, No. 3
(A) and (b) are operation explanatory views in the closed and open states of the guide opening / closing mechanism, FIG. 4 is an explanatory view (time chart) showing the operation of the apparatus of the embodiment, and FIG. FIG. 6 (a) to FIG. 6 (c) and FIG. 7 are explanatory views showing a conventional example. (1) …… Turntable, (1a) …… Sidewall, (2)…
… Collection port, (3) …… Collection guide, (4) …… Drive motor, (4a) …… Drive shaft, (5) …… Drive cam, (6)
...... Following arm, (7) ...... Pressing mechanism, (8) ...... Connecting shaft, (9) ...... Guide stopping means, (G) ...... Guide opening and closing mechanism.

Claims (1)

[Scope of utility model registration request] 1. A turntable (1) for receiving a collected portion on a board surface and conveying it in a circumferential direction, and this turntable (1).
A plurality of recovery ports (2) provided at appropriate intervals along the outer peripheral edge of the recovery port, and recovery guides (3) provided in the vicinity of these recovery ports (2) respectively. 3) rotates about the fulcrum (31), and in the recovery device configured to guide the object to be recovered to the recovery port (2) according to the rotation angle, the recovery guide (3) Drive motors for driving (4)
And a drive cam (5) which is attached to the drive shaft (4a) of the drive motor (4) and rotates, and a tip portion of the drive cam (5) contacts the outer periphery of the drive cam (5) so as to respond to the undulation of the outer peripheral contour. A driven arm (6) that rotates around a fulcrum (61), and a pressing mechanism (7) that urges the driven arm (6) in a direction to constantly contact the outer periphery of the drive cam (5). A connection shaft (8) that connects the fulcrum (61) of the driven arm (6) and the fulcrum (31) of the recovery guide (3) and transmits the rotation of the driven arm (6) to the recovery guide (3), and a recovery guide (8). A collection device comprising a guide opening / closing mechanism (G) including a guide stopping means (9) for stopping 3) in each of the opened and closed positions.